CN210376987U - Projection lens capable of being put in at wide angle - Google Patents
Projection lens capable of being put in at wide angle Download PDFInfo
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- CN210376987U CN210376987U CN201921946537.1U CN201921946537U CN210376987U CN 210376987 U CN210376987 U CN 210376987U CN 201921946537 U CN201921946537 U CN 201921946537U CN 210376987 U CN210376987 U CN 210376987U
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- head wall
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Abstract
The utility model discloses a but projection lens of wide angle input, including scope head wall, outer lens head wall, first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens and eighth lens, scope head wall cup joints inside the outer lens head wall, the inside scope installation slotted hole that is of scope head wall, scope installation slotted hole has set gradually from projection light's incident end to exit end first lens the second lens the third lens the fourth lens with the fifth lens, the inside of outer lens head wall is external diameter installation slotted hole, external diameter installation slotted hole has set gradually from projection light's incident end to exit end sixth lens seventh lens with the eighth lens. Has the advantages that: projection lens handle light through two lens combinations of puting in and put in, but its output wide angle is put in, the wide angle can be adjusted through the distance between the two combinations.
Description
Technical Field
The utility model relates to an optical device field especially relates to a projection lens that can wide angle put in.
Background
For a projector, the lens is the last link in the optical path of the projector, and in terms of the choice of the projector, in a common application place, the standard lens is preferably selected at the same price, the standard lens is best superior in the aspects of restoration of a projected image and geometric distortion of the image, for a small application space, in order to project an image with a large size, a short-focus lens should be preferably used, for wide application sites, in the case of a large capital margin, the telephoto lens is preferred, because such an installation has many advantages, firstly, the influence of the noise of the projector on the viewer is well suppressed, and it is necessary to select different lenses for different scenes, however, due to the switching of the field, it is troublesome to equip a plurality of lenses, and in a space with a large width and a limited length, the lenses need to be projected at a wide angle so as to enlarge the projection picture to the maximum.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide a projection lens capable of being put in at a wide angle to solve the above problems.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
a projection lens capable of being put in a wide angle comprises an inner lens head wall, an outer lens head wall, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens, wherein the inner lens head wall is sleeved inside the outer lens head wall, an inner lens installation slotted hole is formed inside the inner lens head wall, the first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged in the inner lens installation slotted hole from an incident end to an emergent end of projection light, an outer diameter installation slotted hole is formed inside the outer lens head wall, the sixth lens, the seventh lens and the eighth lens are sequentially arranged in the outer diameter installation slotted hole from the incident end to the emergent end of the projection light, the first lens is fixedly arranged inside the inner lens head wall through a fixing piece three, the fifth lens is fixedly arranged inside the inner lens head wall through a second fixing piece, the sixth lens is installed inside the outer lens wall through a first fixing piece, an external thread is formed on the outer wall of the light emitting end of the inner lens wall to form an external thread portion, and an internal thread is formed on the inner wall of the light incident end of the outer lens wall to form an internal thread portion.
Further, the inner lens wall and the outer lens wall are screwed together through the internal thread part and the external thread part to adjust the relative distance between the fifth lens and the sixth lens.
Furthermore, the aperture of the endoscope installation groove hole close to the incident end is smaller than the aperture of the endoscope installation groove hole close to the emergent end, wherein the first lens, the second lens, the third lens and the fourth lens are arranged at the smaller aperture of the endoscope installation groove hole, and the fifth lens is arranged at the larger aperture.
Furthermore, a third pad is arranged between the third lens and the fourth lens in a padding way, a second pad is arranged between the fourth lens and the fifth lens in a padding way, and a first pad is arranged between the seventh lens and the eighth lens in a padding way and is used for enabling the lenses to be stable and spaced at a certain distance.
Furthermore, the first fixing part, the second fixing part and the third fixing part are annular fixing gaskets which are clamped between the lens and the inner lens wall and between the lens inner wall of the outer lens wall.
Further, the first lens is a double-pass filter facilitating filtering, the second lens and the sixth lens are both double-convex lenses, the third lens, the fourth lens, the fifth lens, the seventh lens and the eighth lens are both meniscus lenses, wherein the third lens, the fifth lens, the seventh lens and the eighth lens have concave surfaces facing the incident end, and the fourth lens has convex surfaces facing the incident end.
Further, the refractive index of the sixth lens is smaller than that of the second lens, and the aperture of the sixth lens is twice of the aperture of the second lens.
In the structure, first lens, second lens, third lens, fourth lens and the fifth lens in the scope head wall constitute first projection and throw in the combination, and the combination is thrown in to sixth lens, seventh lens and eighth lens constitution second, first throw in the combination and can carry out preliminary treatment with projection light and form certain input wide angle after, the transmission entering of certain wide angle light of back process the combination is thrown in to the second and is carried out super wide angle and put in, wherein first projection throw in the combination with the second is thrown in the combination and is thrown in the wide angle and have the regulating action to output light.
Has the advantages that: projection lens handle light through two lens combinations of puting in and put in, but its output wide angle is put in, the wide angle can be adjusted through the distance between the two combinations.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a projection lens capable of being projected at a wide angle according to the present invention;
fig. 2 is a schematic diagram of the shortening and screwing of the projection lens capable of being put in at wide angle of the present invention.
The reference numerals are explained below:
1. an endoscope head wall; 2. an outer lens wall; 3. a first lens; 4. a second lens; 5. a third lens; 6. a fourth lens; 7. a fifth lens; 8. a sixth lens; 9. a seventh lens; 10. an eighth lens; 11. a first cushion body; 12. a first fixing part; 13. a second fixing part; 14. a second cushion body; 15. a cushion body III; 16. a third fixing part; 17. an internal thread portion; 18. an external threaded portion.
Detailed Description
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be further explained with reference to the accompanying drawings:
the utility model provides a projection lens capable of being put in at a wide angle, which consists of an inner lens wall 1, an outer lens wall 2, a first lens 3, a second lens 4, a third lens 5, a fourth lens 6, a fifth lens 7, a sixth lens 8, a seventh lens 9 and an eighth lens 10;
referring to fig. 1, an endoscope head wall 1 is sleeved inside an outer lens wall 2, an endoscope installation slot is formed inside the endoscope head wall 1, and a first lens 3, a second lens 4, a third lens 5, a fourth lens 6 and a fifth lens 7 are sequentially arranged in the endoscope installation slot from an incident end to an exit end of projection light;
the inner part of the outer lens wall 2 is an outer diameter mounting slot hole which is provided with a sixth lens 8, a seventh lens 9 and an eighth lens 10 in sequence from the incident end to the emergent end of the projection light;
the first lens 3 is fixedly arranged inside the endoscope head wall 1 through a third fixing piece 17, the fifth lens 7 is fixedly arranged inside the endoscope head wall 1 through a second fixing piece 13, and the sixth lens 8 is arranged inside the outer lens wall 2 through a first fixing piece 12.
Preferably, the aperture of the endoscope installation groove hole close to the incident end is smaller than the aperture of the endoscope installation groove hole close to the emergent end, wherein the first lens 3, the second lens 4, the third lens 5 and the fourth lens 6 are installed at the smaller aperture of the endoscope installation groove hole, and the fifth lens 7 is installed at the larger aperture.
Preferably, a third pad 15 is disposed between the third lens 5 and the fourth lens 6, a second pad 14 is disposed between the fourth lens 6 and the fifth lens 7, and a first pad 11 is disposed between the seventh lens 9 and the eighth lens 10 for stabilizing and spacing the lenses.
Preferably, the first fixing member 12, the second fixing member 13 and the third fixing member 16 are annular fixing washers, and are clamped between the lens and the inner walls of the inner lens head wall 1 and the outer lens head wall 2.
Referring to fig. 2, the outer wall of the light-emitting end of the endoscope head wall 1 is provided with an external thread to form an external thread portion 18, the inner wall of the light-incident end of the outer lens wall 2 is provided with an internal thread to form an internal thread portion 17, and the endoscope head wall 1 and the outer lens wall 2 are screwed together through the internal thread portion 17 and the external thread portion 18 to adjust the relative distance between the fifth lens 7 and the sixth lens 8.
Preferably, the first lens element 3 is a double-pass filter for filtering light, the second lens element 4 and the sixth lens element 8 are both double-convex lens elements, and the third lens element 5, the fourth lens element 6, the fifth lens element 7, the seventh lens element 9 and the eighth lens element 10 are all meniscus lens elements, wherein the concave surfaces of the third lens element 5, the fifth lens element 7, the seventh lens element 9 and the eighth lens element 10 face the incident end, and the convex surface of the fourth lens element 6 faces the incident end.
Preferably, the refractive index of the sixth lens 8 is smaller than the refractive index of the second lens 4, and the aperture of the sixth lens 8 is twice the aperture of the second lens 4.
In the above-mentioned structure, first lens 3, second lens 4, third lens 5, fourth lens 6 and fifth lens 7 in scope headwall 1 constitute first projection and put in the combination, and sixth lens 8, seventh lens 9 and eighth lens 10 constitute the second and put in the combination, first putting in the combination can carry out preliminary treatment with projection light and form certain input wide angle after, and the transmission entering of certain wide angle light is passed through to the back the second is put in the combination and is carried out super wide angle and put in, wherein first projection put in the combination with the second is put in the combination and is put in the wide angle and have the regulating action to the light of output and is had the regulating action.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a projection lens that can wide-angle put in which characterized in that: the endoscope head wall is sleeved inside the outer lens head wall, an endoscope installation slotted hole is formed inside the endoscope head wall, the first lens, the second lens, the third lens, the fourth lens and the fifth lens are sequentially arranged from an incident end to an emergent end of projection light in the endoscope installation slotted hole, an outer diameter installation slotted hole is formed inside the outer lens head wall, the sixth lens, the seventh lens and the eighth lens are sequentially arranged from the incident end to the emergent end of the projection light in the outer diameter installation slotted hole, the first lens is fixedly arranged inside the endoscope head wall through a fixing piece III, and the fifth lens is fixedly arranged inside the endoscope head wall through a fixing piece II, the sixth lens is installed inside the outer lens wall through a first fixing piece, an external thread is formed on the outer wall of the light emitting end of the inner lens wall to form an external thread portion, and an internal thread is formed on the inner wall of the light incident end of the outer lens wall to form an internal thread portion.
2. The wide-angle proj ection lens of claim 1, wherein: the endoscope head wall and the outer lens wall are screwed together through the internal thread part and the external thread part and are used for adjusting the relative distance between the fifth lens and the sixth lens.
3. The wide-angle proj ection lens of claim 1, wherein: the aperture close to the incident end in the endoscope mounting groove hole is smaller than the aperture close to the emergent end, wherein the first lens, the second lens, the third lens and the fourth lens are arranged at the smaller aperture in the endoscope mounting groove hole, and the fifth lens is arranged at the larger aperture.
4. The wide-angle proj ection lens of claim 1, wherein: a third pad is arranged between the third lens and the fourth lens in a padded mode, a second pad is arranged between the fourth lens and the fifth lens in a padded mode, and a first pad is arranged between the seventh lens and the eighth lens in a padded mode and used for enabling the lenses to be stable and spaced at a certain distance.
5. The wide-angle proj ection lens of claim 1, wherein: the first fixing piece, the second fixing piece and the third fixing piece are annular fixing gaskets which are clamped between the lens and the inner wall of the endoscope head wall and the inner wall of the lens of the outer lens wall.
6. The wide-angle proj ection lens of claim 1, wherein: the first lens is a double-pass filter facilitating filtering, the second lens and the sixth lens are both double-convex lenses, the third lens is the fourth lens, the fifth lens is the seventh lens and the eighth lens are both concave-convex lenses, wherein the third lens is the fifth lens, the seventh lens is the concave surface of the eighth lens towards the incident end, and the convex surface of the fourth lens is towards the incident end.
7. The wide-angle proj ection lens of claim 1, wherein: the refractive index of the sixth lens is smaller than that of the second lens, and the aperture of the sixth lens is twice of the aperture of the second lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921946537.1U CN210376987U (en) | 2019-11-12 | 2019-11-12 | Projection lens capable of being put in at wide angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921946537.1U CN210376987U (en) | 2019-11-12 | 2019-11-12 | Projection lens capable of being put in at wide angle |
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| Publication Number | Publication Date |
|---|---|
| CN210376987U true CN210376987U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921946537.1U Active CN210376987U (en) | 2019-11-12 | 2019-11-12 | Projection lens capable of being put in at wide angle |
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| CN (1) | CN210376987U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111443451A (en) * | 2020-05-25 | 2020-07-24 | 深圳市沃特隆科技有限公司 | 360-degree shooting outer lens for camera external connection and use method thereof |
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2019
- 2019-11-12 CN CN201921946537.1U patent/CN210376987U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111443451A (en) * | 2020-05-25 | 2020-07-24 | 深圳市沃特隆科技有限公司 | 360-degree shooting outer lens for camera external connection and use method thereof |
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